So I have a 6 month old morkie( yorkie/maltese).. and every time I go into my room he comes with me I close the door.. and I would take his treats out and I would throw one on the floor for him.. and then lol he would go for it pick it up put it down real fast then he would just go crazy he would do laps in my room just running.. and he does it sooooo fast lol.. and when he does it its almost like he's growling as he does it... he likes these treats and eats them after he does this whatever it is so I know its not the treats.. or is it? Lol I think it's the funniest thing but I just want know what up with him doing that